If you really think about it, the soldier looks like he is of a normal male build while in the armor but if you take away the armor with its extra few centimeters and expose the man inside, he would actually be unusually skinny. It always gets to me when people make great armors but forget the take into consideration that a full size person is supposed to be on the inside. They make the armor the size of the persons' body when it should be larger because the armor+the human inside should be larger than the persons' build because the armor itself adds more bulk to their bodies.

I can definitely see the blend of dead space armor and mass effect inferno armor, and I gotta say I'm loving it, I'm not entirely familiar with dead space though so I could be wrong when I think that you've also added a bit of personal flair, which I think really helps the armor stand apart from it's predecessors